/Engine/Source/Runtime/Core/Public/Internationalization/InternationalizationMetadata.h
Set an array field named FieldName and value of Array
void SetArrayField ( const [FString](API\Runtime\Core\Containers\FString) & FieldName, const [TArray](API\Runtime\Core\Containers\TArray)< [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FLocMetadataValue](API\Runtime\Core\Internationalization\FLocMetadataValue) > > & Array )